<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="test.css">
</head>
<body>
    <ul>
        <li>
            <span>首页</span>
        </li>
        <li>
            <span>菜单一</span>
            <dl>
                <dd>子菜单一-1</dd>
                <dd>子菜单一-2</dd>
            </dl>
        </li>
        <li>
            <span>菜单二</span>
            <dl>
                <dd>子菜单二-1</dd>
                <dd>子菜单二-2</dd>
            </dl>
        </li>
        <li><span>关于我们</span></li>
    </ul>
    <script src="test.js"></script>
</body>
</html>